Improvement in argand-lamp burners



PATEN OEETJCE.

THOMAS H. MOTT, OF NEW YORK, N. Y.

IMPROVEMENT IN ARGAND-LAMP BURNERS.

Specification forming part of Letters Fatent No. 116,984, dated July 11, 1871.

To all whom t may concern:

Be it known that I, THOMAS H. MoTT, of the city, county, and State of New York, have invented a new ,and useful Improvement in Argand Burners for Lamps, of' which the following is a full, clear, and exact description:

In the drawing, Figure l is a partly-sectional elevation of a lamp-burner constructed in accordance with my invention, and Fig. 2 is a central vertical section of the same7 both of' said figures representing' the burner as made for what is termed a students lamp. Fig. 3 is a central vertical section of the'lower portion of the burner as constructed for application to an ordinary lamp, and Fig. 4 a horizontal section through the line cc cc in'Fig. 3.

Similar letters of reference indicate corresponding parts throughout the several figures.

My invention consists in a certain combination of an inverted perforated central or inner cone with the wick-tube of the burner; also, in a combination of an outer perforated cap or shell with said inverted cone, whereby air to keep up combustion is more perfectly supplied to the burning portion of the wick as well as around and within the body of the flame. The invention also includes a novel combination of' a iialnespreader and regulator or button with said invertedperforated inner cone, wick-tube, and outer perforated shell, and whereby the stem of the button is carried and guided by the inverted cone.

In the accompanying drawing, A represents the outer cap or shell of the burner, formed with a fiange, a, at its base, on which the chimney rests. The body of said cap is perforated, as at b, throughout the greater portion of its length, but its top edge left plain and curved or inclined inward. Within, and attached to said cap, is a cylindrical shell or tube, B, that has formed in it on opposite sides spiral slots c. These slots are open at the bottom and receive within them pins d, attached to the wick-holder C. Between the upper edge of the tube B and the adjacent portion of the cap A there is left an airspace around the outside of the burning portion of the wick s, the upper edge of the cap serving to conduct the air to what may be termed the point of combustion. Immediately inside the lower portion of the tube B there is arranged to extend the upper end of a tube, D, which forms part of the wick-tube and has opposite vertical slots j' in it, through which the pins d of the wick-holder project into the spiral slots of the tube B. The object ofthe slotted construction ofthe tubes B and D, and fit of the pins d therein or through, is to provide for the raising and lowering of' the wick by turning the cap A and its cylinder. E is a tube of considerably smaller diameter than the tube D, with which it is combined to form the wick-tube. Vhen the burner is to be applied to a bracket or to la students lamp it is provided 011 one side with an oil-tube or connection, f, for establishing communication with the reservoir, and the wick-tube is closed at its bottom, but the space within the wick-tube is left open below for the draught in a straight line or course up through it. Vhen, however, the burner is to be applied to an ordinary lamp or to screw or fit by a cap at its base, as represented in Figs. 3 and 4, to a reservoir below, then the wick-tube D E is left open at its bottom for the passage of the wick into the reservoir, and the space within the tube E is closed below, as shown at g, and the wick-tube provided with side-draught openings n. F is an inverted hollow cone which is arranged Within the Wick-tube so as to leave an opening between its upper edge and the wicktube for the passage of air to the interior of the burning portion of the wick. This conev is of a perforated construction, as at e, but its upperedge portion is left plain and it has formedin or through it a socket, m., for the passage and guidance of the stem a of a name-spreader and regulator or button, G, which is raised or lowered either directly or by means of any suitable attachment to adjust the iiame as required. While the interior perforated con e F thus serves to carry an d guide the dame-regulating button, the more immediate object of said cone is to direct a current of air in an impinging manner upon the interior burning portion ofthe wick, as well as by its perforations to pass a free supply of air through or within the body of' the iialne, like the perforated cap or shell A, by its arrangement relatively with the wick-tube, serves to direct an impinging current 011 the exterior burning portion of the wick as well as to pass a free supply of air to or around the outside ofthe iiame. By the combination and arrangement, as described, of the perforated shell A and the perforated cone F with the wick-tube D E a most perfect combustion and brilliant light are obtained.

Whatis here e1aimed,and desired to be se- 3. The combination of the Haine-regulating cured by Letters Ps1-tent, isbutton G with the inner inverted perforated eone l. The combination of the hollow inverted F, the outer perforated cap or shell A7 and the perforated eone F with the Wiektube D E, es- Wick-tube of the burner, when arranged substansentially as herein set forth. v tially as described.

2. The combination of the perforated outer THOMAS H. MOTT. cap or shell A and inner inverted perforated Witnesses: cone F with the Wick-tube of the burner7 sub- MICHL. RYAN,

stantially as shown and described. FRED HAYNEs. 

